Chemistry a level help exam on monday pls helppp

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wyann
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why is it called 3,3 dimethylbut-1-ene and not 2,2 dimethylbut-3-ene?


ty
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MyPathwayToMed
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The functional group takes priority so you count the carbons from the functional group or where the functional group has the smaller number.
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username3249896
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#3
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(Original post by wyann)
why is it called 3,3 dimethylbut-1-ene and not 2,2 dimethylbut-3-ene?


ty
alkene has higher priority so start counting from the carbon which gives lower locant number to alkene

CH2=CHC(CH3)3
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